// JavaScript image preload

function showpic(pic) {

        var w = '1074';
        var h = '837'; //soll ja quadratisch und deshalb fensterkopf abziehen.

		x = (screen.width - w) / 2;
		y = (screen.height - h) / 2;
		var popupWindow = window.open(pic, 'Bildergalerie', 'width=' + w + ',height=' + h + ',left=' + x + ',top=' + y + ',menubar=no,resizable=no,scrollbars=yes,location=no');
}